Primary terminal.



C. W BECK.

PRIMARY TERMINAL.

APPLICATION FILED MAY 15. 1913.

Patented Mar. 27, 1917.

12v VEN TOR. CAM/MES VV- BECK.

CHARLES W. BECK, OF DETROIT, MICHIGAN, ASSIGNOR TO THE BECK-FROST CORPORATION, A CORPORATION OF MICHIGAN.

PRIMARY TERMINAL.

Specification of Letters Patent.

Patented Mar. 2'7, 191?.

To all whom it may concern:

Be it known that I, CHARLES WV. BECK, a citizen of the United States, residing at Detroit, county of lVayne, State of Michigan, have invented a certain new and useful Improvement in Primary Terminals, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to primary terminals, and has for its object improvements in this type of device whereby the end of an insulated current-carrying cord may be fitted for quick and easy attachment to, or detachment from, a binding post or some similar terminal member.

In the drawings Figure 1 is a side elevation, partly in section, of the several component parts of the device, partly detached from one another and moved apart along their common axis.

Fig. 2 is a plan view of the device in assembled condition, that is, the point of View being from above the position shown in Fig. 1.

Fig. -3 is a plane representation of the stamped out blank from which the resilient clip or terminal piece is bent to form.

Figs. 4, 5, and 6 are views of modified forms of clip, equally adapted for use in this connection, though having slightly different binding-post-engaging members.

A. represents an insulated current-carrying wire member, having a stripped or exposed end B. In the form shown in Figs. 1 and 2, this wire member passes through a sleeve C, which may be either plain or interiorly screw-threaded, the space between the threaded walls and the surface of the cord being such as to permit the insertion therebetween of either plain or threaded ends E of the clip member F. This member, as shown in Fig. 3, is preferably stamped to form from a blank, the two nearly circular parts D being united by a neck G. When bent over upon one another, through the middle of the neck G, the holes H in the circular portions register with one another, and are thus adapted to engage over a stem of a binding post or similar terminal piece. The

exposed or stripped end B of the wire, which may or may not be in contact with the metal portions of the clip when the threaded ends E are separated to any degree, is pressed tightly between them when the threaded ends E are forced about the cord A sulficiently for the engagement of the threaded portions E within the threaded interior of the sleeve C, or the contact of the wire end may be with a specially struck up tongue projecting from one of the clip members. When in this position, the binding-post-engaging clip and the cord terminal are held in closely and firmly correlated positions. though, upon the unscrewing of the threaded. portion of the coupling or clip from the sleeve C, they may be easily disassembled when this is desired. In case the device is used with a high-tension current, the contact thus secured between the bare wire end B and the metal of the clip is sufiicient, but if a low-tension, current is to be reckoned with, and a more perfect contact between these parts is desired, this may be secured by soldering the parts at their points of contact.

The form of clip shown in Fig. 4 contemplates the use of a post-engaging member N whose curved parts Q lie flat against and partly about the binding post, the neck portion R being in the form of a smaller curve T, while in the form of clip illustrated in Fig. 5 there are two connecting neck portions U, in place of the one central neck G, illustrated in Figs. 2 and 3, with an interven-- ing space adapted to be slightly enlarged as the resilient members V are forced farther 'apart by being forced about the binding post. The type of clip shown in Fig. 6 differs from this only in having the post-engaging jaws extending from one side of the body of the clip. Of course, all of these forms of clip could be modified in accordance with the suggestions of Figs. 4, 5, and 6, by omission of the threading on their cable-engaging inner ends.

What I claim is 1. In a terminal, the combination with a bifurcatedmember, having its furcations formed with portions for respectively engaging the bared end of an insulated conductor, the insulation adjacent said end, and a binding post, of means for displacing the furcations of said member toward each other and into firm engagement with the bared end of the conductor and the insulation thereof.

2. In a terminal, the combination with a formed with bifurcated member, having its furcations formed with portions for respectively engaging the bared end of an insulated conductor and the insulation adjacent said end, of means for displacing the furcations of said member toward each other and into firm engagement with the bared end of the conductor and the insulation thereof.

3. In a terminal, the combination with a bifurcated member having its furcations formed with portions for respectively engaging the bared end of an insulated conductor, the insulation adjacent said end and a binding post, of a sleeve internally threaded to engage coacting threaded portions of said furcations to displace the furcations into firm engagement with the bared end of the conductor and the insulation thereof.

. 4. In a terminal, the combination with a bifurcated member having its furcations formed with portions for respectively engaging the bared end of an insulated conductor, the insulation adjacent said end and a binding post, of means for displacing the furcations of said member toward each other and into firm engagement with the bared end of the conductor, the insulation thereof and the binding post. 5. In a terminal, the combination with a bifurcated member having its furcations portions for respectively engaging the bared end of an insulated conductor, the insulation adjacent said end and a binding post, of a sleeve internally threaded to engage coacting threaded portions of said furcations to displace said furcations a bifurcated member having its furcations respectively formed with coacting threaded end portions for engagement with the insulation of a conductor, portions adjacent its closed end for engagement with a binding post and intermediate portions for engagement with the bared end of the conductor, of an internally threaded sleeve engageable with the threaded ends of said furcations to displace the furcations into firm engagement with the bared end of the conductor, the insulation thereof and the binding post.

7. In a terminal, the combination with a bifurcated member having a portion adjacent its closed end for engagement with a wire, coacting end portions threaded for engagement with the insulation of a conductor and an intermediate portion engageable with the bared end of the conductor, of a sleeve internally threaded for engagement with the threaded ends of said member for simultaneously clamping said ends in engagement with the insulation and clamping the other end portion of the member in engagement with a binding post.

In testimony whereof, I sign this specification in the presence of two witnesses.

CHARLES W. BECK.

Witnesses:

JEFFERSON G. THURBER, WILLIAM M. SWAN.

the combination with 

